So I was solving the question https://mirror.codeforces.com/contest/1809/problem/B

While submitting I found that using #pragma GCC target("avx,avx2,fma") in giving WA 292802920 check line 4

while this code 292803134 is giving AC when I am not using #pragma GCC target("avx,avx2,fma")

So why is #pragma GCC target("avx,avx2,fma") this casuing issue? As far as I knew, using this the compiler would optimize the code for CPU utilization. But in this code the while using sqrt() function this is giving WA.

Any reason to explain the same???